topic Re: Dismiss Customized Content Control and Disable the function? in ArcGIS API for Silverlight Questions

Dismiss Customized Content Control and Disable the function?

ducksunlimited — Mon, 04 Oct 2010 13:54:02 GMT

Hi All,

I use a customized content control for Identify tool. How to clear all the graphics and disable the Identify funtion after I dismiss/close the control panel. Appreciate the help,

Chris

Re: Dismiss Customized Content Control and Disable the function?

JenniferNery — Sat, 11 Dec 2021 21:02:03 GMT

Are you referring to this sample? http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#Identify

If yes, you can clear the graphics layer by doing the following:

GraphicsLayer layer = this.MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
if (layer != null)
 layer.Graphics.Clear(); // or layer.ClearGraphics();

where "MyGraphicsLayer" is the ID of the layer whose graphics you need to clear.

Also to ensure that IdentifyTask is no longer performed on MouseClick, you can either
* unsubscribe to this event so succeeding MouseClicks do not perform an IdentifyTask, or
this.MyMap.MouseClick -= QueryPoint_MouseClick;

* use a private boolean to denote if IdentifyTask need to be created and check if that is true/false before performing an IdentifyTask.
bool identifyTaskEnabled = false; //set to true/false
private void QueryPoint_MouseClick(object sender, ESRI.ArcGIS.Client.Map.MouseEventArgs e)
{
if (!identifyTaskEnabled ) return; // to skip the code that follows
... //IdentifyTask code goes here
}

Re: Dismiss Customized Content Control and Disable the function?

ducksunlimited — Sat, 11 Dec 2021 21:02:05 GMT

Thanks for the reply!

I used a customized user control (windows Panel). when I put these codes, it tells me i am missing use directive for MyMap. How to fix it? thanks,

Chris

Are you referring to this sample? http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#Identify

If yes, you can clear the graphics layer by doing the following:
GraphicsLayer layer = this.MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
if (layer != null)
 layer.Graphics.Clear(); // or layer.ClearGraphics();
where "MyGraphicsLayer" is the ID of the layer whose graphics you need to clear.

Also to ensure that IdentifyTask is no longer performed on MouseClick, you can either
* unsubscribe to this event so succeeding MouseClicks do not perform an IdentifyTask, or
this.MyMap.MouseClick -= QueryPoint_MouseClick;

* use a private boolean to denote if IdentifyTask need to be created and check if that is true/false before performing an IdentifyTask.
bool identifyTaskEnabled = false; //set to true/false
private void QueryPoint_MouseClick(object sender, ESRI.ArcGIS.Client.Map.MouseEventArgs e)
{
if (!identifyTaskEnabled ) return; // to skip the code that follows
... //IdentifyTask code goes here
}

Re: Dismiss Customized Content Control and Disable the function?

JenniferNery — Tue, 05 Oct 2010 16:25:14 GMT

"MyMap" in the code I posted is the name of the map from the sample. You might have renamed the map to something else, you should use that name instead.

Re: Dismiss Customized Content Control and Disable the function?

ducksunlimited — Tue, 05 Oct 2010 16:32:15 GMT

"MyMap" in the code I posted is the name of the map from the sample. You might have renamed the map to something else, you should use that name instead.

I don't think i described the problem clearly.

I have two xaml files - MainPage and WindowPanel. MyMap is in MainPage.xaml, not in WindowPanel.xaml. Now How can i use MyMap control in WindowPanel.xaml.cs file?

Thanks

Re: Dismiss Customized Content Control and Disable the function?

JenniferNery — Sat, 11 Dec 2021 21:02:08 GMT

Oh so MyMap belongs to MainPage.xaml but you need to update it's properties in WindowPanel.xaml. Does WindowPanel contain MainPage? If yes, you probably have something like:

<local:MainPage x:Name="MainPage"/>

Provide this instance a name so you can access MyMap by using this.MainPage.MyMap...

Re: Dismiss Customized Content Control and Disable the function?

ducksunlimited — Sat, 11 Dec 2021 21:02:11 GMT

Where to add <local:MainPage x:Name="MainPage"/>?

appreciate your help!

Oh so MyMap belongs to MainPage.xaml but you need to update it's properties in WindowPanel.xaml. Does WindowPanel contain MainPage? If yes, you probably have something like:
<local:MainPage x:Name="MainPage"/>
Provide this instance a name so you can access MyMap by using this.MainPage.MyMap...